Amplifier



FIG. 1 is a plan view of an amplifier showing my _new design.

FIG. 2 is a left side view thereof.

FIG. 3 is a rear elevational view thereof.

FIG. 4 is a top-right-front perspective view thereof.

FIG. 5 is a rear view thereof.

FIG. 6 is a bottom-left-rear view thereof.

FIG. 7 is a bottom view thereof.

The pattern of holes shown in FIGS. 4-6 covers the entire surface area. 

The ornamental design for an amplifier, as shown and described. 